iMovie: Having both an II-DC camera and a DV camera connected may result in "Camera Not Connected" message

If you are have difficulty getting your iSight (or other II-DC FireWire webcam) to be recognized in iMovie and get a "Camera Not Connected" message, try these simple steps:

• Make sure that no other application is open that might be using the webcam, such as iChat AV.
• If you have a DV camera (video camera/camcorder) connected to the computer, disconnect the DV device and reopen iMovie.

For additional assistance see My iSight won't communicate with iMovie.